# 琅琅書店 vs ISBN

The clearest difference is iOS requirement: ISBN at 14.0 against 琅琅書店's 16.0. On price, update cadence, ads and in-app purchases there is nothing between them.

Both are free to download. Neither carries in-app purchases, so what you see is what you pay.

琅琅書店 ships an update every 2 months, ISBN every 4 months. The most recent releases landed on October 24, 2026 and October 27, 2026 respectively.

## The numbers

| Metric | 琅琅書店 | ISBN |
| --- | --- | --- |
| Price | Free | Free |
| Rating | **[3.0 (2 ratings)](https://appshunter.io/ios/app/id668593227/reviews)** | — |
| Number of ratings | **2** | — |
| Positive reviews | 25.0% of reviews | — |
| In-app purchases | No | No |
| Ads | Yes | Yes |
| Update frequency | **Every 2 months** | Every 4 months |
| Size | 63 MB | 16 MB |
| Requires iOS | 16.0 | **14.0** |
| Devices | iPhone, iPad | **iPhone, iPad, iPod** |
| Age rating | 17+ | 4+ |
| Developer | [udn.com](https://appshunter.io/developer/370132216) | [剑秋 肖](https://appshunter.io/developer/806037264) |

## What reviewers say

### 琅琅書店

[App page](https://appshunter.io/ios/app/id668593227)

**Features:** Vision Pro support

**In-app purchases:** none


### ISBN

[App page](https://appshunter.io/ios/app/isbn/id6449743934)

**Features:** macOS Compatibility

**In-app purchases:** none


## Frequently asked questions

### Is 琅琅書店 free?

琅琅書店 is free to download, with no in-app purchases.

### Is ISBN free?

ISBN is free to download, with no in-app purchases.

### Do 琅琅書店 or ISBN have ads?

Both 琅琅書店 and ISBN show ads.

### Which is updated more often, 琅琅書店 or ISBN?

琅琅書店 ships an update every 2 months, and ISBN every 4 months. Most recently, 琅琅書店 was updated on October 24, 2026 and ISBN on October 27, 2026.

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*Compared by [AppsHunter](https://appshunter.io/) from daily US App Store data. Review summaries are generated from verbatim App Store reviews.*